Differential cross-section measurements for proton elastic scattering on natSi in the energy range Ep,lab = 3–5 MeV, suitable for EBS

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2021-11-15 DOI:10.1016/j.nimb.2021.09.006

F. Maragkos , N. Dimitrakopoulos , E. Georgali , M. Kokkoris , A. Lagogiannis , E. Ntemou , N. Patronis , Th. Tsakiris , A. Ziagkova

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Abstract

The differential cross section values of the ^natSi(p,p₀) elastic scattering were determined in the energy range of E_p,lab = 3000–5000 keV at 6 backscattering detection angles (120°, 130°, 140°, 1 50°, 160° and 170°). The target was a self-supported thin Si₃N₄ foil. In addition, a thick crystalline silicon wafer was irradiated on its unpolished side with protons at energies E_p,lab = 3200, 3400, 3600, 3850, 4100, 4300, 4500, 4740, 5000 keV, in order to validate the results of the first experiment. On top of both targets a thin layer of ¹⁹⁷Au was evaporated for normalization purposes. Both measurements were performed in parallel, using the 5.5 MV TN11 HV Tandem Accelerator and the high precision goniometer of N.C.S.R. ‘Demokritos’, Athens, Greece. The experimental and data analysis processes are presented in detail, as well as, comparisons between the obtained differential cross sections and already existing datasets in literature, along with the benchmarking results.

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质子在natSi上弹性散射的微分截面测量，能量范围为Ep,lab = 3-5 MeV，适用于EBS

在Ep,lab = 3000 ~ 5000 keV的能量范围内，测定了6个后向散射探测角(120°，130°，140°，150°，160°和170°)下，natSi(p,p0)弹性散射的微分截面值。目标是一种自支撑的Si3N4薄膜。此外，为了验证第一个实验的结果，用能量为Ep,lab = 3200, 3400, 3600, 3850, 4100, 4300, 4500, 4740, 5000 keV的质子照射厚晶硅片的未抛光面。在两个目标的顶部蒸发一层薄薄的197Au以达到标准化的目的。这两种测量都是并行进行的，使用5.5 MV TN11 HV串联加速器和希腊雅典的N.C.S.R.“Demokritos”高精度测角仪。详细介绍了实验和数据分析过程，以及所获得的微分截面与文献中已有数据集之间的比较，以及基准测试结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.